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Supplemental Cash Flow Information Supplemental Cash Flow Information (Tables)
 12 Months Ended
Dec. 31, 2012
Supplemental Cash Flow Information [Abstract]  
Schedule of Changes in Working Capital
Changes in working capital for the years ended 2012, 2011 and 2010 are as follows:
 
For the years ended December 31,
Changes in working capital:
2012
 
2011
 
2010
Decrease/(increase) in accounts receivable
$
(870
)
 
$
1,839

 
$
(4,022
)
Decrease in inventories
(11,682
)
 
(9,030
)
 
(14,351
)
(Increase)/decrease in deposits and prepayments
(4,256
)
 
(1,250
)
 
235

Increase in accounts payable and accrued liabilities
5,016

 
2,335

 
27,607

Other
(202
)
 
(1,747
)
 
481

Total changes in working capital
$
(11,994
)
 
$
(7,853
)
 
$
9,950